Salanoa is nearing full recovery from a thigh problem suffered in the win over Cardiff Blues at the end of October.
O'Connor is yet to feature in the current campaign after suffering a calf injury in pre-season training.
Munster are unbeaten this season, having won all five of their PRO14 matches so far, and have a comfortable lead at the top of Conference B.
The duo's return to action will come as a welcome boost to head coach Johann van Graan as they prepare to face Glasgow Warriors in Scotstoun on Monday night (LIVE on eir sport 1 from 7.45pm).
In addition to the players away on international duty, Munster could also be without influential out-half JJ Hanrahan who suffered a thigh contusion in the 38-22 win over Ospreys last Sunday.
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